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BSI 23/30445124 DC:2023 Edition

BSI 23/30445124 DC:2023 Edition

$13.70

BS ISO 7447 Underwater acoustics. Measurement of radiated underwater sound from percussive pile driving. In- situ determination of the insertion loss of barrier control measures underwater

Published By Publication Date Number of Pages
BSI 2023 33
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PDF Catalog

PDF Pages PDF Title
1 30445124-NC.pdf
3 ISO_DIS 7447 ed.1 – id.83266 Enquiry PDF (en).pdf
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Instrumentation
4.1 General information
4.2 Hydrophones and analysers
11 4.3 Analysis software
4.4 Calibration
5 Methods
5.1 General remarks
5.2 Comparability of measurements
13 5.3 Background noise
5.4 Measurements on one single pile (direct method)
5.5 Measurements on two different piles (indirect method)
14 6 Measurement procedure
6.1 General remarks
6.2 Chronological order of the measurements
6.3 Measuring positions
6.3.1 General
6.3.2 Number of hydrophones/measuring positions
6.3.3 Measuring distance
6.3.4 Measuring direction
15 6.3.5 Measuring depths
6.4 Examples of measuring setups
6.4.1 General
16 6.4.2 Measuring setup€1€— Checking for a radially-symmetric effect
17 6.4.3 Measuring setup€2€— Checking for dependence on depth
6.4.4 Measuring setup€3€— Measure with radially-symmetric effect, independent of the respective depth
18 6.5 Functional test and measuring conditions
6.6 Measuring quantities and accompanying parameters
19 6.7 Data recording
7 Data processing and calculation of acoustic metrics
7.1 Data processing steps
20 7.2 Background noise correction
7.3 Determination of the insertion loss
7.3.1 General
21 7.3.2 Case€1€— Measurement on one pile
7.3.3 Case€2€— Measurement on two different piles
7.4 Uncertainties
7.4.1 General
7.4.2 Measurement uncertainty
7.4.3 Characterization of noise abatement systems
22 7.5 Sound insulation for broadband level quantities
8 Reporting
8.1 Formal information in the reports
8.1.1 Front page
8.1.2 Recurring information on the following pages
23 8.1.3 Signatures
8.2 Contents of the reports
8.2.1 Structuring of contents
8.2.2 Description of the measurements
24 8.2.3 Presentation of the results
25 Annex€A (informative) Considerations for near shore piling applications
27 Annex€B (informative) Sound Particle Motion and Seabed Vibration
31 Bibliography

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BSI 23/30445124 DC
$13.70